civil war in the u.s. by blowing up a bay area bank. tonight kpix 5 reporter mark sayer learned some new information about this sglan the end of the line for matthew llaneza came here at this bank of america branch on headen berger road near the airport. he was actually an undercover fbi agent and agents arrested llaneza as he attempted to detonate what he thought was a bomb. neighbors say the family has lived here for yearss and very reclusive. they are also shocked by today's sglairs does that concern you? . >> well, yes tfk it does, especially with two small children. >> but llaneza also has criminal history in santa clara county. llaneza's own father told investigators that matthew had converted to islam. matthew was a former marine with the belief that the secret police or government is trying to follow him and according to today's federal criminal complaint, llaneza told the undercover fbi agent he would dance with joy when the bomb exploded. >> wow. sur real. that's as real as you're going to get for something to come that close to hope and hopefully -- thankfully it was thwarted.